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88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* -*- c-basic-offset: 2 -*-
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* vi:si:et:sw=2:sts=8:ts=8:expandtab
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*
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* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_VOLUME_H__
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#define __GST_VOLUME_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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#include <gst/audio/streamvolume.h>
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#include <gst/audio/audio.h>
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#include <gst/audio/gstaudiofilter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VOLUME \
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(gst_volume_get_type())
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#define GST_VOLUME(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VOLUME,GstVolume))
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#define GST_VOLUME_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VOLUME,GstVolumeClass))
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#define GST_IS_VOLUME(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VOLUME))
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#define GST_IS_VOLUME_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VOLUME))
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typedef struct _GstVolume GstVolume;
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typedef struct _GstVolumeClass GstVolumeClass;
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/**
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* GstVolume:
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*
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* Opaque data structure.
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*/
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struct _GstVolume {
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GstAudioFilter element;
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void (*process)(GstVolume*, gpointer, guint);
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void (*process_controlled)(GstVolume*, gpointer, gdouble *, guint, guint);
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gboolean mute;
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gfloat volume;
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gboolean current_mute;
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gfloat current_volume;
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gint current_vol_i32;
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gint current_vol_i24; /* the _i(nt) values get synchronized with the */
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gint current_vol_i16; /* the _i(nt) values get synchronized with the */
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gint current_vol_i8; /* the _i(nt) values get synchronized with the */
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GList *tracklist;
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gboolean negotiated;
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gboolean *mutes;
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guint mutes_count;
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gdouble *volumes;
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guint volumes_count;
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};
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struct _GstVolumeClass {
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GstAudioFilterClass parent_class;
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};
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GType gst_volume_get_type (void);
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G_END_DECLS
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#endif /* __GST_VOLUME_H__ */
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